<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <!-- 求1-100之间所有偶数的和 -->
    <script>
        var num=1;
        var total=0;
        while(num<=100){
            if(num%2==0){
                total+=num;
            }
            num++;
        }
        console.log(total);
        var num2=1;
        var total2=0;
        while(num2<=100){
            if(num2%7==0){
                total2+=num2;
            }
            num2++;
        }
        console.log(total2);
    </script>
</body>
</html>